Study on Penicillin Affect Activeness on Pectolases of Pathogens of Apple Tree Canker
MA Qiang, QIAo Guo biao, ZHUANG Xia, ZHANG Xiao wei
ACTA AGRICULTURAE BOREALI-SINICA . 2009, (3): 96 -98 .  DOI: 10.7668/hbnxb.2009.03.021